Home / 2,422.64-3,343.94-1,428.50

Finding the Fourth Proportional to 2,422.64, 3,343.94 and 1,428.50

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Solution

The fourth proportional to 2,422.64, 3,343.94 and 1,428.50 is: 1,971.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.64 : 3,343.94 = 1,428.50 : x
  2. Step 2: Convert to fraction form
    2,422.64/3,343.94 = 1,428.50/x
  3. Step 3: Cross multiply
    2,422.64x = 3,343.94 × 1,428.50
  4. Step 4: Simplify right side
    2,422.64x = 4,776,818.29
  5. Step 5: Solve for x
    x = 4,776,818.29/2,422.64
  6. Step 6: Final answer
    x = 1,971.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.